> but text/uri-list is a better format for the most common use of OPML (a collection of RSS/Atom feeds)

text/uri-list seems like joy to use technically, but in practice simple formats have tendency to evolve into frankenstein monster with a mess of extensions and variations (see markdown for example) where every vendor will extend the format to support something for their platform.

Users expect to maintain their feed structure for example when moving to a new platform just like a file system hierarchy, which text/uri-list doesn't seem to support right off the bat